Coordinate input instrument



FIG. 1 is a perspective view of a coordinate input instrument according to my new design;

FIG. 2 is a top plan view of the coordinate input instrument of FIG. 1;

FIG. 3 is a front view of the coordinate input instrument of FIG. 1, the rear view of the coordinate input instrument being mirror symmetrical;

FIG. 4 is a bottom view of the coordinate input instrument of FIG. 1;

FIG. 5 is a left side view of the coordinate input instrument of FIG. 1; and,

FIG. 6 is a right side view of the coordinate input instrument of FIG. 1.

The broken lines show portions of the coordinate input instrument which form no part of the claimed design. 

CLAIM The ornamental design for a coordinate input instrument, as shown and described. 